405
CDUS41 KLWX 150628
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
228 AM EDT THU MAY 15 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 14 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 73 4:41 PM 89 2010 75 -2 67
MINIMUM 62 6:35 AM 32 1996 52 10 60
2013
AVERAGE 68 64 4 64
PRECIPITATION (IN)
YESTERDAY 0.10 1.87 2018 0.16 -0.06 0.35
MONTH TO DATE 3.25 2.06 1.19 2.39
SINCE MAR 1 6.68 9.03 -2.35 8.02
SINCE JAN 1 11.10 14.58 -3.48 15.47
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE MAR 1 0.0 4.0 -4.0 T
SINCE JUL 1 15.5 21.0 -5.5 11.7
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 4 -4 1
MONTH TO DATE 20 69 -49 42
SINCE MAR 1 711 1036 -325 721
SINCE JUL 1 4033 4546 -513 3685
COOLING
YESTERDAY 3 2 1 0
MONTH TO DATE 32 24 8 42
SINCE MAR 1 79 46 33 86
SINCE JAN 1 79 46 33 89
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 5.1
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 11:00 PM
LOWEST 76 4:00 PM
AVERAGE 87
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 90 1962
MINIMUM TEMPERATURE (F) 53 37 1984
2016
SUNRISE AND SUNSET
MAY 15 2025...........SUNRISE 5:57 AM EDT SUNSET 8:16 PM EDT
MAY 16 2025...........SUNRISE 5:56 AM EDT SUNSET 8:17 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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